World Hypertension Day is observed on the 17th of May every year. The theme for the year 2017 is Know Your Blood Pressure . Hypertension is known as a silent killer because it is not only asymptomatic (does not cause any symptoms till late in its course) but also idiopathic in nature (has no known cause) which makes it difficult to diagnose the condition. And this is the reason why hypertension is most often detected at a doctor's clinic during a regular health check-up. However there are cases when you can experience a sudden rise in your blood pressure even